Shearing machine



Mai e 1941. H. o. woonY SHEARING MACHINE 2 Sheets-Sheet 1 Filed Sept. 19, 1959 March 4, 1941. o, WQODY 2,233,444

SHEARING MACHINE Filed Sept. 19, 1939 2 Sheets-Sheet 2 EVE-J5- i Inventor (f, HUBERT O Wooov,

Attorneys Patented Mar. 4, 1941 UNITED STATES PATET UFFECE 4 Claims.

This invention relates to a shearing machine, the general object of the invention being to provide means for driving the cutting means but if such means should encounter a hard object which would prevent movement of the cutting means the drive means would slip and thus no damage would occur to the cutting means.

Another object of the invention is to provide means whereby the driving connection to the cutting means can be readily connected with the driving means or disconnected therefrom by the operator and without stopping the main drive shaft.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims.

In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which:

Figure 1 is an elevation showing the complete assembly of parts for driving a shearing device from a main shaft.

Figure 2 is a top plan view of Figure 1. Figure 3 is a front view of the stub shaft for communicating the movement of the main shaft to the flexible shaft of the shearing device.

Figure 4 is a section on the line 4-4 of Figure 1. Figure 5 is a section on the line 5-5 bf Figure 4. In these drawings the numeral I indicates a main or line shaft driven from any suitable power means and supported in any suitable manner such as by means of brackets one of which is shown at 2 in Figures 1 and 2. An elongated block-like member 3 is formed with a slot 4 at one end thereof for receiving the bolt 5 which passes through anyone of a plurality of holes 6 formed in the outer part of the bracket so that the block 3 can be adjustably connected with the bracket by shifting the bolt and by tightening the nut of the bolt the block 3 can be held in adjusted position by swinging the block in a vertical plane on the bolt and then tightening the bolt to hold it in adjusted position. This block carries a transversely extending stub shaft 1 which has a beveled gear 8 connected to one end and a clutch part 9 7 with a projection l l for engaging a projection 12 on the clutch part 9 so that when the two projections are in engagement the shaft will be driven from the pulley I which is driven by a belt 13 passing over the pulley l0 and over a large pulley M on the shaft 1. A yoke I is pivotally connected to the lower part of a guard member 16 which has an opening therein through which the shaft 1 passes with a part of the member 16 located between the block 3 and the gear 8. The pivots for the member are shown at 11 and said member 95 carries a beveled gear I8 which meshes with the gear 8 and is attached to a flexible shaft 19 which passes through the member 15 and through a flexible casing 20 having one end attached to the member 15' and its other end is connected with the shearing device 2|, the cutting member of which is driven in the usual manner from the flexible shaft IS. A lever 22 is pivoted to the block as shown at 23 and has a recess 24 therein for engaging the conical part N5 of the member I5, when the lever is moved downwardly so that the lever forces the member 15 outwardly which, of course, moves the shaft 1 with it and this causes the lug or projection I2 on the clutch member 9 to move into the path of the projection II on pulley 10 so that the pulley It will rotate the clutch member 9 and the shaft 1 which, of course, causes the gears 8 and 18 to impart movement to the cutting means of the shearing device 2|. When the lever 22 is in raised position a spring 25 pulls the shaft 1 and the parts attached thereto in the opposite direction so that the clutch member 9 is free of the pulley and thus the shaft 1 will not be driven from the main drive means. The gears 8 and 18 are so formed that they will remain in mesh even when the member I5 is swung a slight distance outwardly on its pivot 11 and, of course, as the member 15 is connected with the member 16 the gears remain in mesh as the shaft 1 is moved longitudinally inwardly or outwardly.

A cable 26 is connected with the free end of the lever 22 by passing through a hole 21 therein and one part of the cable passesthrough a guide 28 at the free end of the block 3 to a point where it can be reached by the operator handling the shearing device 2| and by pulling upon this part 26 the lever 22 is swung downwardly to engage the drive means with the shaft 1 and by pulling upon the other part 25' of the cable which passes through a guide eye 29 on an upright rod 30 carried by the block the lever is raised so that the spring 215 can move the parts to inoperative position.

The bolt 5 should be tightened sufficiently to hold the block 3 in adjusted position with the belt l3 passing over the pulley ID with sufficient tension to drive the parts to have the cutting means perform their cutting action but if such means should strike a hard object that could not be out then the block 3 will turn on the bolt 5 so that the tension of the belt will be lessened and thus the cutting means of the member 2| will not be actuated and thus no harm can come to the cutting parts by the object engaged thereby. By using the single bolt this tension can be easily regulated to permit the stoppage of the cutting means to cause the belt l3 to move the block a sufficient distance to slack the belt so that it will not drive the shaft 1 and the parts associated therewith but will simply slip over the pulley l0.

It is thought from the foregoing description I that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts provided that such changes fall within the scope of the appended. claims.

Having described the invention, what is claimed as new is:

1. A driving apparatus of the class described comprising'a main shaft, a support therefor, a carrier member, a single bolt for connecting the carrier member to the support, a transversely arranged shaft rotatably supported by the carrier member, a gear at one end of the transverse shaft, a clutch part at the other end thereof,- a pulley on the transverse shaft, means including a belt for driving the pulley from the main drive shaft, said pulley and the clutch part having inter-engaging projections, an abutment member supported by the transverse shaft at the gear carrying end thereof, a yoke pivoted to said member, a third shaft carried by the yoke, a gear connected with the third shaft and meshing with the first-mentioned gear, said bolt permittingthe carrier member to move to slacken the belt when rotary movement of the third shaft is unduly resisted, a manually operated abutment member for moving the shaft in a direction to move the inter-engaging projections out of engagement with each other when the manual member is moved against the abutment member, and spring means for moving the transverse shaft in an opposite direction when the manually actuated member is moved away from the abutment mem: ber to place the projections in engagement with each other.

2. In a device of the class described, a bracket, a block-like member, a single bolt for pivotally connecting the block-like member to the bracket and permitting the block-like member to be swung in a vertical plane, a transverse shaft carried-by the block-like member, a pulley loosely arranged on the shaft, a drive shaft, a large pulley thereon, a belt on the pulleys, a clutch member on the transverse shaft, a gear carried by the transverse shaft, a shield member carried by the transverse shaft and in which the gear is located, a lever supported on the block-like member, manually operated means for moving the lever downwardly .between the shield member and the block-like member to move the transverse shaft in a direction to cause the clutch member to engage the pulley on the transverse shaft, spring means for moving the transverse shaft in an opposite direction when the lever is in raised position to permit the pulley to rotate freely on the shaft, a third shaft, a gear connected with the third shaft and meshing with the first-mentioned gear and means for supporting an end of the third shaft and the second gear from'the block-like member.

3. In a device of the class described, a supporting member, a shaft rotatably supported therein and having its ends projecting therefrom, a pair of clutch parts on one end of the shaft one of which is loosely arranged on the shaft, means for rotating said loosely arranged clutch part, a gear on the other end of the shaft, a guard member on said other end of the shaft and surrounding the gear, a lever adapted to engage the'guard member when moved in one direction to move the guard member and the shaft to a position where the clutch parts will engage each other, spring means for moving the shaft in the opposite direction to release the clutch means and a shaft having a gear thereon connected with the firstmentioned gear.

4. In a device of the class described, a supporting member, a shaft rotatably supported therein and having its end projecting therefrom, a pair of clutch parts on one end of the shaft one of which is loosely arranged on the shaft, means for rotating said loosely arranged clutch part, a gear on the other end of the shaft, a guard member on said otherend of the shaft and surrounding the gear, a lever adapted to engage the guard member when movedin one direction to move the guard member and the shaft to a position where the clutch parts will engage each other, spring means for moving the shaft in the opposite direction to release the clutch means and a shaft having a gear thereon connected with the first-mentioned gear, and a yoke pivoted to the guard member and supporting an end part of the second shaft 'andholding the gear of the second shaft in mesh with the gear of the first shaft.

HUBERT O. WOODY. 

